🩸 Estimated Blood Volume (EBV)
UseEnter weight and select the population (adult male/female, child, infant, neonate); the tool multiplies weigh…
SourceNadler SB, et al. Prediction of blood volume in normal human adults. Surgery. 1962;51(2):224-232.
This-shift next steps
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Methodology · worked example, guidelines & full notes
EBV is the denominator for estimating maximum allowable blood loss, percent blood loss, and transfusion volume, so a population-appropriate coefficient matters more than apparent precision (original synthesis · not guideline verbatim).
When to use
Enter weight and select the population (adult male/female, child, infant, neonate); the tool multiplies weight by the coefficient.
How it works
EBV = weight (kg) × coefficient (mL/kg). Common coefficients: adult male 75, adult female 65, child 70, infant 80, neonate 85 (preterm up to 90–100).
Key points
- EBV is the denominator for estimating maximum allowable blood loss, percent blood loss, and transfusion volume, so a population-appropriate coefficient matters more than apparent precision (original synthesis · not guideline verbatim).
- Weight-based coefficients overestimate volume in obese or edematous patients, where lean or ideal body weight gives a closer figure.
- Neonatal and preterm coefficients are the highest, reflecting proportionally larger blood volume per kilogram.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Weight | 60 kg |
|---|---|
| Population | Child (70 mL/kg) |
→Estimated blood volume4200mL
- Coefficient：70 mL/kg
| Weight | 60 kg |
|---|---|
| Population | Adult male (75 mL/kg) |
→Estimated blood volume4500mL
- Coefficient：75 mL/kg
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Estimated Blood Volume (EBV)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does Estimated Blood Volume (EBV) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Estimated Blood Volume (EBV) calculated in practice? Can you show a worked example?
- Inputs: Weight 60 kg, Population Child (70 mL/kg) → Result: Estimated blood volume 4200 mL（Coefficient: 70 mL/kg） Inputs: Weight 60 kg, Population Adult male (75 mL/kg) → Result: Estimated blood volume 4500 mL（Coefficient: 75 mL/kg）